ppapi: PPB_VpnProvider: Implement Service Helper

content/public/browser/pepper_vpn_provider_resource_host_proxy.h

+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CONTENT_PUBLIC_BROWSER_PEPPER_VPN_PROVIDER_RESOURCE_HOST_PROXY_H_
+#define CONTENT_PUBLIC_BROWSER_PEPPER_VPN_PROVIDER_RESOURCE_HOST_PROXY_H_
+
+#include <vector>
+
+#include "content/common/content_export.h"
+
+namespace content {
+
+// Describes interface for communication with the VpnProviderResouceHost.
+class CONTENT_EXPORT PepperVpnProviderResourceHostProxy {
+ public:
+  virtual ~PepperVpnProviderResourceHostProxy() {}
+
+  // Passes an Unbind event to the VpnProviderResouceHost.
+  virtual void SendOnUnbind() = 0;
+
+  // Sends an IP packet to the VpnProviderResouceHost.
+  virtual void SendOnPacketReceived(const std::vector<char>& data) = 0;
+};
+
+}  // namespace content
+
+#endif  // CONTENT_PUBLIC_BROWSER_PEPPER_VPN_PROVIDER_RESOURCE_HOST_PROXY_H_